A small plastic bead has been charged to -20 nC. Part A What is the magnitude of the acceleration of a proton that is 1.0 cm from the center of the bead? Express your answer with the appropriate units. View Available Hint(s) ap = Submit Part B In which direction does the acceleration vector point? View Available Hint(s) towards the bead Submit away from the bead Part C ae = Value Submit What is the magnitude of the acceleration of an electron that is 1.0 cm from the center of the bead? Express your answer to two significant figures and include the appropriate units. View Available Hint(s) Part D Value Units towards the bead Submit away from the bead P In which direction does the acceleration vector point? View Available Hint(s) Units ?